TABLE OF CONTENTS The DVB (Digital Video Broadcast) digital television (DTV) broadcast standard is used in most regions except the United States, Canada, South Korea, Taiwan and Argentina.
The three other primary DTV standards are ISDB (Integrated Services Digital Broadcasting), ATSC (Advanced Television Systems Committee) and OpenCable . A comparison between the standards is shown in Table 17.1. The basic audio and video capabilities are very similar. The major differences are the RF modulation schemes and the level of definition for non-audio/video services.
| Parameter | US (ATSC) | Europe, Asia (DVB) | Japan (ISDB) | OpenCable |
|---|---|---|---|---|
| video compression | MPEG-2 | |||
| audio compression | Dolby Digital | MPEG2, Dolby Digital, DTS | MPEG-2 AAC-LC | Dolby Digital |
| multiplexing | MPEG-2 transport stream | |||
| terrestrial modulation | 8-VSB | COFDM | BST-OFDM [2] | - |
| 6 MHz | 6, 7, or 8 MHz | 6, 7, or 8 MHz | 6 MHz |
| cable modulation | 16-VSB [3] | QAM | QAM | QAM |
| 6 MHz | 6, 7, or 8 MHz | 6, 7, or 8 MHz | 6 MHz |
| satellite modulation | QPSK, 8PSK | QPSK | PSK | - |
| 1. ISDB = Integrated Services Digital Broadcasting. | ||||
| [2]BST-OFDM = Bandwidth Segmented Transmission of OFDM. [3]Most digital cable systems use QAM instead of 16-VSB. |
The DVB standard is actually a group of ETSI standards:
| EN 300 421 | DVB-S: Framing Structure, Channel Coding and Modulation for 11/12 GHz Satellite Services |
| EN 300 429 | DVB-C: Framing Structure, Channel Coding and Modulation for Cable Systems |
| EN 300 468 | Specification for Service Information (SI) in DVB Systems |
| EN 300 472 | Specification... |
